Machine for making soap powder.



W. M. SCHWARTZ & E. B. AYRES.

MACHINE FOB. MAKING SOAP POWDER.

APPLICATION FILED JAN. 6, 1912.

2 SHEBTS-SHEBT 1.

W. M. SCHWARTZ M1. B. AYRES. MAGHINE FORMAKING SOAP POWDER.

APPLIOATION FILED JAN. 6, 1912.

Patented July 23, 1912.

UNITED STATES PATENT OFFICE.

WALTERII. SCHWARTZ AND ELWOOD B. AYRESJOF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO THE PHILADELPHIA TEXTILE MACHINERY COMPANY, OF PHILA- DELPHIA, PENNSYLVANIA, CORPORATION OF PENNSYLVANIA.

' MACHINE FOR MAKING SOAP POWDER.

To all whom it may concern:

Be it known that we, WALTER M. SCHWARTZ and ELwoon B. AYREs, citizens of the United States, and residents of Philadelphia, Pennsylvania, have invented certain Improvements in Machines for Making Soap Powder, of which the following is a specification.

This invention relates to certain improvements in machines for making soap powder, in which the soap film is deposited upon rotating drums. L

The object of this invention is to improve the construction of a machine of this type so that the liquid soap can be taken immediately from the mixer and reduced in its passage through the machine to a flakedor powdered condition.

In the accompanying drawings :Figure 1, is a sectional elevation on the line 1-1, Fig. 2; Fig. 2, is a vertical sectional view on the line 2-2, Fig. 1'; the section being taken through one of the upper and one of the lower drums; and Fig. 3, is an end view of a portion of the machine.

This invention is an improvement on the machine for which application for patent was filed December .3, 1910, by Messrs. Bingham and Ayres, Serial Number 595,494. A is the frame of'the machine having a jacketed hopper B ihto which the liquid soap is discharged from the mixer. The soap enters the hopper in a heated condition and at one edge thereof is a gate 6 which regulates the flow of the liquid soap from the hopper. Closing the bottom of the hopper is a drum C which may be heated in some instances. The soap liquid forms in a film on this drum, as it rotates and the film is removed from the drum by a scraper D pivoted at d; on one arm of the scraper is a plate 05 which is held against the drum by a weight adjustably-mounted on the other arm of the scraper. The soap as it is scraped from the drum C drops into the space between two drums F, F, having trunnions ff mounted in bearings a in the frame A- of the machine, and are driven by any suitable mechanism from a general power shaft. One drum is preferably laterally movable in respectto the other drum and is held against the other drum by a coiled spring f shown clearly in Fig. 3.

Specification of Letters Patent.

Patented July 23, 1912.

Application filed January 6, 1912. Serial No. 689,844. 1

This spring is adapted to a cap a secured to the frame A. The box of the other drum F is mounted in the frame, the frame being open at one side and closed by a platea so that on removing the plate the box and 1ts drum can be removed laterally from the frame. Thus both drums can be readily detached when desired.

G, G, are two scrapers having plates 9 which bear upon the outer surface of the drums F. One of these scrapers is weighted and the other is positively adjusted toward the drum by means of a set screw g bearing against an angle plate forming part of the frame. The trunnions of the drums F-F are hollow, and the outer ends of the trunnions have boxes into which extend the pipes F F through which cold water passes. In order to insure the proper flow of water through the drums we provide the drums with internal spiral ribs f, as clearly shown in Fig. 2; and these ribs, as the drum rotates, positively feed the water from one end of the drum to the other, insuring the water supply and the other to the waste.-

The drums N have internal spiral ribs n for the purpose of positively circulating the water in the drums and in order to displace a certain amount of water within'the drum we may use a closed cylinder M. By

this means, a comparatively small amount of water is used to properly cool the drum. Arranged to bear against the surfaceof one drum N is apivoted scraper H having a plate h and a weight h and bearing against the other drum is a scraper I having a plate 2'. This scraper is pivoted at 2" and is, adjusted toward the drum by a set screw 5 bearing against a cross bar on the frame A. One of the drums N is mounted in fixed bearings in the frame of the machine similar to one of the drums .Fwhile the other drum -N is mounted in adjustable bearings, the ,box n havinga spring seat and located between this spring seat and a plate K is a series of coiled springs it", and on a bracket A on the frame is a set screw which bears against the plate and by which the tension of the springs can be regulated. Bolts 19 extend through the frame and through the bracket and are secured to a cap plate on the opposite side of the machine, which holds the bearing for the other drum; these bolts take the strain off the frame.

It will be noticed that the lower pair of rolls is considerably larger in diameter than the upper pair. By this construction we make a more uniform powder than if the rolls were of the same size.

The material as it is scraped from the small upper rollsis of such a. pasty condition that, when it falls from the scrap ers, it will adhere to the surface of the larger rolls, and as it passes between these rolls it will be in such an adhesive condition that it will be retained on the rolls even after being finally pressed and, as the lower rolls are considerably greater in diameter, the material has time before'being removed from the rolls to become thoroughly cooled, so that when it is scraped from the rolls it is in 'what may be termed a powdered condition. In some instances, we may drive one of said lower pair of rolls at a greater speed than the other, so as to grind the material as well as reduce it to a thin film, but, we prefer to grind the material after it is passed from the pressing machine.

In feeding water to the spiral drums, in order to insure the even cooling of the surfaces of the drums, we feed the water to each pair of drums at opposite ends and discharge at opposite ends, so that the water entering one drum will balance the partially heated water discharging from the other drum, thus insuring an even cooling of the soap passing between the drums. By traversing in cooling liquid in the manner described we may make the spirals of both drums right or left handed, and as the drums rotate in opposite directions the liquid will circulate in opposite directions.

We preferably provide the hopper B with a. steam jacket so as to keep the liquid at the proper temperature before it passes to the first drum, so that the liquid is heated during the first operation and cooled in passing between the other drums.

It will be noticed that one drum of each pair is mounted in fixed bearings and has and each of these drums has a weighted scraper which automatically adjusts itself to the movement of its drum, thus insuring the proper pressure to reduce the soap maextend under both rolls and are inclined toward a central channel tleading to one side of the machine, so that any of the material scraped off the cylinder and which does not pass through the meshes of the screen plates 8 and into the hopper S is gradually worked toward the central passage t and delivered to one side of the machine as t-ailings to be treated again as these particles are either too large or not in condition to be used as soap powder.

We claim 1. The combination in a machine for making soap powders, of a hopper, a drum mounted in the bottom of the hopper, means for rotating said drum, a pair of drumslocated under the first mentioned drum, scrapers for said drums, each of said drums having spiral internal plates therein, means for supplying water to the drums at one end, and means for allowing the water to flow. away from the drums at the other end.

2. The combination in a machine for making soap powder, of a hopper, a. drum, a pair of cool drums mounted under the first mentioned drum, and a second pair of cool drums of greater diameter than the first pair, mounted under-said first pair, each of said pair of drums being supplied with water or othercooling liquid, and internal spiral plates in each of said drums for causing the water to positively flow from one end of the drum to the other.

3. The combination in a machine for mak ing soap powder, of a hopper, a drum located under the hopper, a pair of cooled drums located under the first mentioned drum, fixed bearings for the trunnions of one of said drums, and a positively adjusted scraper arranged to bear against the periphery of said drum, movable bearings for the other drum, a spring resting against each bearing of the said adjustable drum causing the drum to bear against the peripheryof the fixed drum, and a weighted scraper for said -movable drum arranged to automatinoes-237 said drums, the drums of each pair having internal spiral ribs to cause the cooling v liquid to positively fiow from one end of the drum to theo-ther and the large drums having closed cylinders therein to displace the cooling liquid, a supply pipe connected to one end of each drum, and an exhaust pipe connected to the other end of each drum.

5. The combination in a soap powder machine,- of a pair of drums; means for scraping the soap from said drums; a screen mounted under the drums for receiving the materialscraped therefrom; means for agitating the screen; and means for allowing the material to pass from the screen which is not fine enough to pass therethrough.

6. The combination in a soap powder machine, of a pair of drums located in close proximity to each other; means for feeding material to'the space between the drums; a

passing between the drums; with means for removing the soap film from the drums.

In testimony whereof, we have signed our names to this specification, in the resence of two subscribing witnesses.

WALTER M. SCHWARTZ. ELWOOD wB. A'YRES.

Witnesses:

J 0s. H. KLEIN, WM. A BARR.

water s ipgily pipe'ior each and an opposite directions, insuring an even cooling of the filrn of soap 

